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一、引言双回路振荡器包括有两个互相耦合的振荡回路,这两个回路或以电容相耦合,或以互感相耦合,或二者兼备,这种振荡器的特点是它有两个自振频率,但只有一个能产生自持振荡。如所周知,这种振荡器的优点是,在两个回路之中,调准其中一个对频率有很大的影响;而调准另一个则对频率影响不大,同时对反馈系数及负载阻抗则影响甚大,这样,调准相应的回路就可以使振荡频率和工作状态都能够在一定的范围内得到平滑的变化。一般的双回路振荡器往往利用电容器耦合,互感耦合之所以少见应用,可能是因为调准较为不便,但根据作者的经验,这一类型的强力振荡器过去之未曾得到应有的重视和普及是不应该的。
I. INTRODUCTION Dual-loop oscillators consist of two oscillating circuits coupled to each other. These two circuits are either capacitively-coupled, or mutual-coupled, or both. The oscillator is characterized by two Vibration frequency, but only one can generate self-sustained oscillation. As we all know, this oscillator has the advantage that, in the two loops, aligning one of them has a great influence on the frequency; while adjusting the other one has little effect on the frequency, and the feedback coefficient and the load impedance Then the influence is very big, in this way, adjusting the corresponding circuit can make the oscillating frequency and the working state all be able to get the smooth change within a certain range. Common dual-loop oscillators often use capacitor coupling, the rare application of mutual inductive coupling may be due to the inconvenience of the adjustment, but according to the author’s experience, this type of powerful oscillator in the past have not received the attention and popularity is Not appropriate.